Pith Number

pith:BH3WD4YU

pith:2018:BH3WD4YUGWKA4STDPSY3XKNXEW

not attested not anchored not stored refs pending

The Ice Cap Zone: A Unique Habitable Zone for Ocean Worlds

Amit Levi, Ramses M. Ramirez

arxiv:1803.07717 v2 · 2018-03-21 · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BH3WD4YUGWKA4STDPSY3XKNXEW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:15:27.838484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09f761f31435940e4a637cb1bba9b725870e11fa52f28bad079267fc00dd6e16

Aliases

arxiv: 1803.07717 · arxiv_version: 1803.07717v2 · doi: 10.48550/arxiv.1803.07717 · pith_short_12: BH3WD4YUGWKA · pith_short_16: BH3WD4YUGWKA4STD · pith_short_8: BH3WD4YU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/BH3WD4YUGWKA4STDPSY3XKNXEW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 09f761f31435940e4a637cb1bba9b725870e11fa52f28bad079267fc00dd6e16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "937fc6bde93b7f22acb54bf8fad6ce07d6119f11a927b89ab160a3d230e64e65",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-03-21T02:11:59Z",
    "title_canon_sha256": "1c79489e614e5f128c2e5c59f70f5b878feddfd7b24a14ed41faab7182c323cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07717",
    "kind": "arxiv",
    "version": 2
  }
}